Your ClearWaveAir purifier has a small prefilter at the base of the unit near the Air Inlet Area. This filter is designed to protect the electronics to dust and debris.
The ClearWave Air purifier includes a filter for the primary purpose of removing dust and airborne particulates from the air. On average, this filter should be replaced every 90 days. The filter is clearly visible from the bottom of the unit and a color change from black to gray indicates time for replacement. This will typically occur after 90 days of operation. Filter replacement requires no tools and can be done in 60 seconds, and it is clearly outlined in the ClearWaveAir Owner’s Manual.
When your ClearWave Air ships it comes with 4 filters giving an 1 year average of operation. A packet of 6 filters will give an additional 1.5 years of operation and a packet of 12 filters will give an additional 3 years of operation.